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Pharmaceutical Manufacturing and Packing Sourcer

The Colouration of Solid Oral Dosage Forms

Colour is a visual phenomenon which is widely observed but rarely considered. Many of our perceptions are firmly associated with certain colours - for example, red is indicative of danger, whilst green is associated with natural/environmental materials. Colour has been used for centuries as a means of cosmetic decoration for individuals and their environment. Additionally, colour is commonly used as an indicator of quality for certain products, particularly foodstuffs, and a shift in colour from the expected shade can highlight safety concerns with the product. Indeed, the desire to create consistency in the colouration of food products led to the development of the first instrument for measuring colour.

Subsequent technical developments have progressed the evolution of the colour industry, and many types of products including textiles, paints and cosmetics, are controlled with respect to colour. In the modern commercial world, colour plays an essential role in the brand marketing of an enormous spectrum of products. In highly regulated industries such as food, cosmetics and pharmaceuticals, colourants are stringently controlled in terms of application, inclusion levels and chemical specification. Colour plays a vital role within the pharmaceutical industry, and medicinal products are coloured for a multitude of reasons, including...


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By Dr Paul Smith, Technical Manager at Sensient Pharmaceutical Technologies, UK

Dr Paul Smith is Technical Manager at Sensient Pharmaceutical Technologies, UK. He studied Biochemistry at the University of Liverpool and gained a PhD in Molecular Biology from the University of Edinburgh. Prior to joining Sensient Pharmaceutical Technologies, Paul worked as a Research Scientist, both in academia and the biotechnology industry.
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Paul Smith
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